impaction

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impaction

  • /ɪmˈpækʃən/

Rhymes with -ækʃən

Where it comes from

From Latin impingere (“to dash against, impinge”).

noun impactions

  1. countable, uncountable A compression; the packing together of loose matter.
  2. countable, uncountable Something packed together tightly; a mass of densely-packed matter.
  3. countable, uncountable A solid, immobile bulk of stool. As plastics cannot be easily egested, these can accumulate within the stomach, causing impaction and leading ultimately to death.
  4. countable, uncountable The failure of a tooth to erupt into the dental arch, because of adjacent teeth, dense overlying bone, excessive soft tissue, or other factor.
  5. countable, uncountable The situation where an institute, usually a college or university, receives more applications from qualified applicants than the number of spaces available, meaning that meeting the minimum admission requirements does not guarantee acceptance.

Translations

Every language

noun failure of a tooth to erupt

Portuguêsimpactação, retenção
Françaisenclavement, inclusion

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Cite this
MLA

"impaction." Wiktionary, via Micwyn, micwyn.com/word/impaction. Accessed 6 Nov. 2026.

APA

impaction. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/impaction

Chicago

"impaction." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/impaction.

BibTeX
@misc{impaction_2026,
  title = {impaction},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/impaction},
  urldate = {2026-11-06}
}